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STTwo-32
ST Technical Moderator
September 23, 2024

FAQ STM32WB: Why is the wireless stack not running after installation?

When uploading a stack on an STM32WB and the wireless stack is not running, this is due to the following: 
Most of the time, the reason is that after the installation of a wireless stack, it by default starts running without the need for any user action.
If the user application sends two consecutive FUS_GET_STATE commands, the wireless stack boots again on FUS.

In that case, it is possible to launch the wireless stack execution by sending the FUS_START_WS command. This command switches the Arm Cortex®-M0+ execution to the wireless stack.

To send the FUS_START_WS command, you need to click on the button [Start Wireless Stack] in the [Firmware Upgrade Service] tab in STM32CubeProgrammer directly after the stack installation. 

See the screenshot below for a visual illustration: 

STTwo32_0-1726759993780.png